During the week of April 23, the House of Representatives is expected to vote on the Cyber Intelligence Sharing and Protection Act of 2011 (CISPA). And starting on Monday, a variety of organizations, including the Electronic Frontier Foundation, the American Civil Liberties Union, the Center for Democracy and Technology, The Constitution Project, Demand Progress, Engine Advocacy, Fight for the Future, Free Press, Reporters Without Borders, Techdirt, and TechFreedom plan to launch a “week of action” campaign against CISPA, a bill they believe remains dangerously broad in its language, which could result in abuse by the government, and damages to our civil liberties.

While many are comparing CISPA to the Stop Online Piracy Act (SOPA), the two bills are entirely different for a number of reasons. First, CISPA is a cybersecurity bill that pertains to the sharing of information between the government and private companies. SOPA was an anti-piracy bill that sought to block access to “foreign rogue” websites that illegally distributed copyrighted material. Second, SOPA was opposed by many of the technology and Internet industry’s biggest players. CISPA, on the other hand, effectively has the support of hundreds of technology and Internet companies — a key difference that could drastically affect whether the anti-CISPA crowd can successfully block passage of the bill.

To give you a full picture of just how much political firepower the CISPA has in Congress, we’ve listed most, if not all, of the companies and organizations that have voiced either direct support for CISPA (by writing a letter, or otherwise expressing support for this specific bill), or indirect support through the direct support of a trade group. The organizations or companies listed in bold have voiced direct support. Those companies not in bold have not necessarily given direct support (though quite a few have), but have supported the bill through the trade group, which is listed in bold. The links go to the .pdf files of the letters the company sent to the House Intelligence Committee to express their support of CISPA.

As you can see, the list of CISPA supporters is massive, and should give anyone who thinks this will be an easy political fight a dose of reality. Not that CISPA can’t be stopped but, well, scroll down and you’ll see what we mean.